Dumping truck



V. M. HADDON.

DUMP|N 5 TRUCK. APPLICATION FILED AUG-6. 192i.

W W mm Am a u 4 LL :9 PU M2 1 "a. n i m T P J. m rLvu l V. M. HADDON. DUMPINGTRUCK. APPLICAHON man AUG.6, 1921.

2 SHEETSSHET 2.

MIHAJJD'LI Patented Apr. 4, 1922.

; UNITED STATES PATENT OFFICE.

vmen. M. mmnon, or OMAHA-,NEBRASKA.

DUMPING TRUCK.

To all whom it may concern." I

Be it known thatI, VIRGIL M. HAnDoN, a citizen of the United States, residin at Omaha, in the county of Douglas and tate of Nebraska, have invented certain new and useful Improvements in Dumping Trucks,

of which thefollowing is a specification.

This invention relates to an improvement in dumping-trucks, and has ,for itsobject,

broadly, to provide such a construction that the operation of dumping will be conven ent,

and that the parts. required for thispurpose will be few, simple and durable. The

invention specifically includes means useful for securing the front end of the, box in locked relation with theframe ofthe truck in such a manner that vibration of the parts will be practically eliminated and accidental dumping will be. prevented, also includes convenient means for releasing the boxto permit dumping, and one of the specific ob-' jects is to provide such a mounting for the tail-gate that leakage from the box will be prevented when closed, and that its upper end will be moved upwardly andrearwardly during its swinging movement when the box moves to a dumped position. Also the in.- vention' includes certain adjustable features to be described. 5 I V In the accompanying drawing, Fig. 1 1s a side view of a dumping truck embodying my invention, the front end of the box being elevated. Fig. 2 is asimilar view showing the box in a lowered position. Fig. 3 is a view of the frontend of the box and parts mounted thereon, the spring for controlling the latch being broken awhy, the, truck frame andparts of the cross-bar being partly in section, the section through the -handlc-.

ver being online 3-3: of Fig. 2. Fig. 4E

showsthe reverse side of the'dumping truck to that shown inFig. 2. Fig. 5 is a sectional .view on line 5-5 of Fig. 3, being a detail to clearly show the arrangement ofa latch, v a catch, a spring and a crank-rod for disen gaging the latch from the catch.

.Fig. (3 shows a plan view of a part of the truckframe, together with a cross-bar, and means to adjust the cross-bar longitudinally of the 7 frame. Fi 7 is a plan view, partly broken away, to il ustrate the mounting 'ofthe tail-.

7 gate.

' ing, the truck-frame and box thereon are Referring now particularly to the drawrespectively indicated at 1 and 2, the pivotal mounting of the box, intermediate its Specification of Letters Patent;

of staples 8.

Patented Apr. 4,1922.

Application filed August 1921. Serial lid-490,328.

bearings in the bosses 4 (Fig. 6.) of a pair of castings 5 which. are secured upon the frame 1, at the rear end thereof.

Numeral 6 indicates a cross-bar which is ends, preferably being upon a shaft 2} havingdisposed upon the top of the frame 1 and i may be adjusted longitudinally thereof, said barv being secured to the frame, rearwa-rdly of the drivers seat 7 by means of the pair The corners of the box 2, at its front end,

are provided with posts 9 which extend below its bottom a suitable distance so that when the front end of the box has been swung downwardly to its normal position,

the lower ends of the posts will rest upon the top of the cross-bard Y Numeral 10 indicates thetail-gate. It is provided with a pair of L-shaped brackets 1 11,each having an arm. awhich'has a pivotal mounting 13 upon the top, inwardly said brackets 14: and 14" being mounted-upon blocks 15 whichare suitably secured to the crossbar 6.

Numeral16 indicates a link'having its lower end mountedupon .a pivotpin 0, carried by the hand-lever, its upper end being pivotally mounted, asindicatcd at (Z, upon the box. Numeral 16. (Fig/4;.) indicates a second link having its lower end mounted upon a pivot-pin c" which connects it with the'lever 12', its upper end being pivotally mounted upon the box as indicated at d;

Since the pivotal mounting 0 for the lower end of the link 16 is disposed-midway between the ends of the hand-lever 12, an upward swinging movement. ofthe latter will cause the front end of the box 'to swing upwardly for dumping, the lever 12' and link 16" having movements corresponding to the movements of said hand-lever and link 16. Numerals 17 and 1'? indicate a air of pull-and-push rods which are pivotally mounted upon the respective ends of the tail gate, as indicated at 18, the front-end ofthe rod 17 having a mounting .upon the pivotpin 0 and the rod 17 having .a mountin of its front end upon the pivot-pin o, an I it will be understood that the tail-gate will be opened by operation ofthc rods l'Z and 17 when the hand-lever is swung upwardly,

a downward swinging movement .'Of the: p 5 hand-lever, by operation of said rods 17 and- 17 causing a closure :ofthe tail gate. p

In instances where the dumping-truck 15.

used for hauling mortar, cement or other" plastic materiaL-itis necessary that a-'suit able closurema'y be made of the tail-gate, and therefore adjustable means are provided whereby a suitable degree ofpressure may be maintained for said gate against the open, rear end-of the box, and certain inclined plates are provided for the'box which are adapted to be engaged by certain inclined surfaces of the gate, these features tending to pre vent leakage.

Numeral 20 indicates a catch which is se- 7c of the rod 23, when partly rotated, causing I the latch to swing outwardly against the force of the spring 22 to permit said release.

The rod '23 may be conveniently rotated againstthe force of thespring'22by anoperator who may manually cause: a rocking 'movement of the hand-piece 24:,lwhich is pivotally mountedon the hand-lever 12, a flexible member or chain m being connected at one of its ends with the hand-piece 24, its opposite end being connected withthe arm n of the rod/23.

for maintaining-the box in it s normal, stationary position operate'to advantage in resisting stresses, since the catch, latch and. loop is of the rod-23 are disposed at'the me- 5 dial line of the box.

box 'infdumped position, consisting, in part, of anotched control-bar 25a"da'pted to slide in a'loop, guide or catch plate 26fwhich is fibsecured'to theside of the 'box,as 'shownin the drawing, the'notches being adapted to" 'eng'ageIQSaid plate. This is pivotally mountedonthe handle'vcr, and its use,

tlie box may bemaintained at various de- 6Q jgrees of inclination, thislast feature being o f-f'advanta'g'e to permit a gradualrelease of near-in fr'om the ,boxwhilefthe truck is "of the box being 'depe ndedupon for' this "driven forwardly to cause spre'ading of said w mat'erial on theground, in the operation of pavmg'.

"for makingthe several adjustments 'are'im- It will be seen: that the means described Means are provided for maintaining the Means are provided for adjusting the cross-bar 6 longitudinally of the frame 1, consisting of the pair ofadjusting-rods 27.. "Byreferring to Fig. 6 it will be seen that after the staples 8 have been loosened, the

vpairjof nuts p may be rotated for making said adjustmenu the rear ends 'of the rods 2'7 being-in engagement with the castings 5,

the advantage derived inmaking said adjustments heijng to dispose the bar 6 in; such a position that the posts for the front endof 'the, box .will make suitable engagements therewith; alsoithat the latch 21'may make suitable engagement 'with-the-cat'ch 20, and also that the pivotal mounting b of the handlever 12 willbe disposed atja' suitable disf tance'from therear end of the box 1'.

By referring to Fig. 3'itiwillbe seen that the latch'is threaded'inthe'bos's r'of'a pivot allymounted strap or holder 8 of the latch, V and on that account the latter maybe adj usted longitudinally so 1 that it "in ay suitably engage thecatch'.

It is, considered that the fmeans described portant. The*p'arts may become unduly worn, and adjustments may be required; It isobviously an advantage to malie-fsuch an accurate closure "of the tail-gate that mean orother1plastic"materialflwillfbe retained inthe box; inclined surfaces and flan'gesfie areiuseful for said purpose, the hand-lever. and rods 17causethe actualp'ressure of the gate against'the'box, the parts being then disposed as shown in Fig. '2.

Since the pivotal mountingb of the'handlever may be adjusted longitudinally of the frame 1, it is obvious-that the degree of pressurefof the'surfacesff of theitailrgate itgallst the flange's'e of thebox may be reguate; J. It will beapprec'iated that a truck'for delivering different kinds of' material' must.

move upon various inclinations, and in some instances duringthe operationof' dumping 11.0

it may be desired that the entire load shall be 'quic'kly emptied from the box, and on thls account the tail-gate has such: amount- 1ng that its upper endwillbe elevated above the top of thebox, which'provides an ample passageway for material to be di'scharged.

', Numerals 19 indicate ,'plates {which are secured tothe box,'the flanges'e of the'iplates V projecti re'arwa-rdly and outwardly at a suitable; istan'c e beyond the rear end of thebox, the tail-gate 10 being provi'dedfwith flat contact-surfaces or facets 1 ff which have a degree "of inclination that, when, the ta l-gate is I closed, leakage" of liquids will be prevente'dya' certain'degreebf pressure of 1 the surfaces 7. againstthe inclined surfaces purpose.

While I have described details "of'fconlimiting myself in this respect, and changes in size, form and proportion and minor details may be made, said changes being Within the scope of the invention as claimed.

I claim as my invention:

1. The combination with a dumping-truck having a box mounted on the truck frame to permit it to have swinging movements, of a cross-bar on said frame, a catch on the cross-bar approximately at the medial line of the frame, a latch pivotally mounted on the box normally engaging the catch, a rod havingjournalledhearings on the box and having a projection disposed at the medial line of the frame, said rod being revoluble to move its projection for disengaging the latch from the catch.

2. The combination with a dumpingtruck having a. box mounted on the truck frame I to permit it to have swinging movements,

of a catch approximately at the medial line of and secured to the frame, a latch-holder hingedly mounted on the box, a latch having a threaded connection with the latchholder, aspring on the box normally causing engagement of the latch with the catch, a rod having journalled bearings on the box and having a projection disposed at the medial line of the frame, and means for r0 tating the rod to move its projection into engagement with the latch for disengagingsaid latch from the catch.

In testimony whereof I have affixed my signature in presence of two witnesses.

- VIRGIL M.HADDON.

Witnesses:

HIRAM A. STURGI s, ARTHUR H. STURGIS. 

